Module metrics 

Modules

semantic 🔒

Per-table semantic metadata accumulated during one OTLP metrics encode pass.

translator 🔒

Structs

DEFAULT_PROMOTE_ATTRS_SET 🔒

SemanticIndex

Index of {table_name -> {semantic_key -> value}} built while encoding.

Enums

AttributeType 🔒

Constants

APPROXIMATE_COLUMN_COUNT 🔒

the default column count for table writer

BUCKET_TABLE_SUFFIX 🔒

COUNT_TABLE_SUFFIX 🔒

DEFAULT_PROMOTE_ATTRS 🔒

HISTOGRAM_LE_COLUMN 🔒

INSTANCE_KEY 🔒

JOB_KEY 🔒

METRIC_TYPE_COUNTER 🔒

METRIC_TYPE_GAUGE 🔒

METRIC_TYPE_HISTOGRAM 🔒

METRIC_TYPE_SUMMARY 🔒

METRIC_TYPE_UPDOWN_COUNTER 🔒

OTEL_SCOPE_NAME 🔒

OTEL_SCOPE_SCHEMA_URL 🔒

OTEL_SCOPE_VERSION 🔒

SUM_TABLE_SUFFIX 🔒

Functions

emitted_semantic_tables 🔒

The tables a metric emits and their per-table metric.type. Histogram fans out into _bucket (the histogram) plus _sum/_count counters; summary fans out into the quantile table plus _count/_sum counters (legacy summary stays a single table).

encode_exponential_histogram 🔒

encode_gauge 🔒

encode this gauge metric

encode_histogram 🔒

Encode histogram data. This function returns 3 insert requests for 3 tables.

encode_metrics 🔒

encode_sum 🔒

encode this sum metric

encode_summary 🔒

from_metric_type 🔒

legacy_normalize_otlp_name

Normalize otlp instrumentation, metric and attribute names

process_resource_attrs 🔒

process_scope_attrs 🔒

record_metric_semantics 🔒

Records the declared metric-level semantic keys for every table this metric emits.

temporality_value 🔒

Maps OTLP aggregation_temporality to the semantic value, or None when the instrument has no temporality (gauge/summary) or it is unspecified.

to_grpc_insert_requests

Convert OpenTelemetry metrics to GreptimeDB insert requests

write_attributes 🔒

write_data_point_value 🔒

write_tags_and_timestamp 🔒

write_timestamp 🔒